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Diadromous Vulnerable 🌡️ Subtropical

Stiphodon Imperiorientis

Stiphodon imperiorientis Watson & Chen, 1998
Max Length
5 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
12.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Prefers to inhabit areas of boulders with a rock and gravel bottoms in clear streams and mainly feed on epiphyte and biofilm on rocks in the wild. Due to its amphidromous nature, as known to occur with its congeners (adults live and breed in freshwater streams; larvae hatched drift downstream and develop in marine environments; juveniles return to freshwater streams), blockage of the migration pathway (e.g. construction of dam or culvert in streams) would cause a significant impact on this species. Ensuring no net loss of habitat, keeping the natural stream flow and maintaining the stream-ocean corridor are all essential for preserving this species (based on researches on its congeners; see Ref. 82683, 82684, 82685, 82689, 82690, 82692). Collection conducted by aquarium hobbyists (both private and commercial) also poses a serious threat to Stiphodon species in some regions and this kind of activity should be strictly controlled .

Scientific Name
Stiphodon imperiorientis
Authority
Watson & Chen, 1998
Habitat
Diadromous
Climate
Subtropical
Body Shape
Elongated
IUCN Status
VU
Max Length
5 cm
Resilience
High
Vulnerability
12.00/100
Migration
Amphidromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 9 - 10; Anal spines: 1; Anal soft rays: 10. This species is a large-sized Stiphodon with the pectoral fin spotted and sexual dimorphism obvious. Mature male with body grey or dark with iridescent blue/ green/ purple lateral bars (depending on viewing angle), snout and cheek iridescent blue/ green/ purple, first dorsal fin elongated and triangular, second dorsal fin with obvious spots (spots on first dorsal fin not obvious) and the female with two obvious transverse stripes on the body .: elongated.

🌀 Behaviour

Behavioural data for Stiphodon Imperiorientis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; benthopelagic; amphidromous. Subtropical South China, and probably appears in eastern Taiwan.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish
Migration
Amphidromous
Food Items

epiphyte and biofilm on rocks in the wild

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
5cm
Dorsal Spines
7
Dorsal Rays
10
Anal Spines
1
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2007

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Watson & Chen, 1998

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